package com.ym.utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5 {

    public static String md5(String plainText) {
        String str = null;
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            md.update(plainText.getBytes());
            byte b[] = md.digest();

            int i;

            StringBuffer buf = new StringBuffer("");
            for (int offset = 0; offset < b.length; offset++) {
                i = b[offset];
                if (i < 0)
                    i += 256;
                if (i < 16)
                    buf.append("0");
                buf.append(Integer.toHexString(i));
            }
            str = buf.toString();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        return str;
    }
    public static void main(String[] args) {
        String key = "4@vq2Qia1TJiPd0V$a7diuw5cPgtwO";
        //MD5加密
        String signP=MD5.md5(1+key);
        System.out.println(signP);
    }

}
